Suppose we have 2009. You are born 1980 and turn 29. Of course you get 80+29=109.
Or 2012. You are born 1980 and turn 32. 80+32=112.
Nihilgeist was the one who gave it a mention. 111 in 2011 is no revelation of something strange but follows simple logics.
But I want to point to another strange thing.
We all celebrated the new millenium at December 31, midnight 1999.
This is pretty incorrect according logics.
The new millenium should have started at December 31, midnight 2000!
You get that?
But it was a common ritual the whole world did...